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The Effect of High-speed Railways on Knowledge Transfer: Evidence from Japanese Patent Citations

Ryuichi Tamura
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Ryuichi Tamura: Faculty of Integrated Media, Wakkanai Hokusei Gakuen University

Public Policy Review, 2017, vol. 13, issue 3, 325-342

Abstract: This paper tries to identify the causal relationships between the high-speed railway services (the Shinkansen lines of Japan) and knowledge transfer as evidenced by patent citations. Using the opening of the Hokuriku Shinkansen line in 1997 as an exogenous variation, we designed a natural experiment to assess the changes in the frequencies and geographical extent of knowledge transfer to the area where the Shinkansen runs. We apply the difference in difference methodology to examine the effect of the operation, and find that the Shinkansen enhances the knowledge transfer around the area, and expands the geographical extent in which the knowledge transfer takes place.

Keywords: knowledge transfer; patent citations; knowledge spillovers; high-speed railways; natural experiment (search for similar items in EconPapers)
JEL-codes: D62 C99 L91 (search for similar items in EconPapers)
Date: 2017
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